1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include "avformat.h"
20 #include "avio.h"
21 #include "isom.h"
22
ff_mov_read_esds(AVFormatContext * fc,AVIOContext * pb)23 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb)
24 {
25 AVStream *st;
26 int tag, ret = 0;
27
28 if (fc->nb_streams < 1)
29 return 0;
30 st = fc->streams[fc->nb_streams-1];
31
32 avio_rb32(pb); /* version + flags */
33 ff_mp4_read_descr(fc, pb, &tag);
34 if (tag == MP4ESDescrTag) {
35 ff_mp4_parse_es_descr(pb, NULL);
36 } else
37 avio_rb16(pb); /* ID */
38
39 ff_mp4_read_descr(fc, pb, &tag);
40 if (tag == MP4DecConfigDescrTag)
41 ret = ff_mp4_read_dec_config_descr(fc, st, pb);
42
43 return ret;
44 }
45